3570

The Model 3570 DC Strain Gage Conditioner is a general-purpose instrument for input of pressure, force, torque, weight, and other variables measured by DC-excited strain gage transducers. It accepts a single input from any conventional 4-arm strain gage bridge, nominal 120 Ω or higher, with a full-scale range of 0.75, 1.5, or 3.0 mV/V.

Simple two-point "zero and span" calibration is provided for the 3570's input channel. In addition, a 100-kΩ, 0.1% shunt resistor is supplied. You can use this resistor—or one of your own—to apply an "equivalent input" for calibration purposes, when the transducer's full-scale mV/V sensitivity is accurately known. The calibration shunt may be switched in and out for either a positive or negative up-scale reading via simple mnemonic commands issued to the RS232/RS485 port or by means of logic-level command signals through the rear Analog Input Connector.

A third calibration technique for the 3570 involves application of the special MV/V CALIBRATION (MVV) command through the RS232/RS485 Interface Port when both "mV/V" sensitivity and corresponding full-scale rating of the transducer are known.

The instrument can be completely set up and operated either through the front-panel keypad or via simple mnemonic commands received from an external computer or terminal through the RS232/RS485 Interface Port.

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